Bolt-threading machine.



A. B. LANDIS.

BOLT THREADING MACHINE.

'APPLIQATION FILED mmjsl, 1911.

Patented 0t.6,1914.

4 SHEETS-SHEET? l.

Patanted Oct. 6, 1914.

A. LANUlS.

BOLT THREADHIG MACHIEE.

APPLICATION FILED MAR.

A. B. LANDIS.

BOLT THEEADING MACHINE.

APPLICATION FILED MAR. 31f

Patented 001;. 6, 1914,

4 SHEBTSS' EF 1' 3 QKMW some m? M Z G We: neg;

A. B. LANDIS;

BOLT THREADHNTG MACHINE.

APPLICATION FILED MAR, 31, 1911 Patented Oct. 6, 1914.

4 SHBBTS-SHEET 4.

k 1 1 4 ag @FFICE,

EBBAHAM LANBIS, Q1 ENIIELD, PENNSYLVANIA.

BOLT-THREAEII-IG EZAQHIN 1* fpecification ofLe-t'ters Patent. PatentedOpt 6 191 1 Appiication filed March 31, 1911. Serial No 618,212.

of rod (3 at this pointfor a purpose to be presently described. A rod 10is pivotally .n AH ii. Lemons,

n United States re iding at aonnelrted at ll to the lower end of aforked 1 county of filoutgmwry and 3 lrwr 12 \VlHCll 1s fulcrumed at 13to a 60 uu'o invented cerv rim-hot or a in a connected With the frameorkecl lever embraces the cutternents in Bolt- Said which the followheadand at H- carries rollers which engage a circumferential groove in saidhead for niion to proopeii'atin the opening and closing mecha- 5 i i luisin in the usual. or any approved, manner. r aiil roll extends through:1 depending lug on carriage C, and a nut 15 is ad- =il mounted on theadjacent screwthr-eaded portion to regulate the time of 79 'onl'act andconsequent operation.

Carriage {Y is formed with central boss extending out transverselytherefrom in which is formed a hearing and in saidhear- -Minn of a boltinn i journal'ul a hollow shaft 16 on the 5 pyiu'ljli oonst-iuc.- carand of which is mounted a Work carry nachine he continnou 'tiuction ofwhich .viil

V simple inexpensive aid will he, hereinafter more and claimed.

: the aocmn 'iunying' dran'in broken E lug nnd su n orting turret l7.Said shai'i; rzueri with a spiral toothed portion which a worm gear 19is adapted to Said worm gear 19 is formed on 3 l'ii is in l-S with 1'onsg'aize. :2 sleeve n u'l1 is mounted on they carriage driving *i't'tThe outer end of said rmi'iago driving shaft is soreW-threaded, as 'tshown in Fr; 13. hui the interior of said sleeve sinoolh. permitting itto slide freely g5 i; '1 Sue end of said sleeve 19 is 'liai'lged to abutagainst, the adjacent oi boss v and a oupehaped rim 21 is formedarounrlsaid liangeto serw as one part i of a clutch. The other dutchpart 22 con- 90 ieau IllOl'C portions ma i3. weird to ahaft by means ofa spline 23 p m; p we out i wh lulee in a groove in shaft 20 and KS l ina groove in i he hub of part by ew A flanged nut 2% is mounted re outeraid of the clutol1, part 21 on 9 -v 19 the F1 nge surrounding the hub ofQ so that but a short independent lonmovement is permitted between .inioh p l collar 25 surrounds min a '2 o a iion in yoke C and loo o isILlOlllllZE-Cl between a scrow-threaded into the perforation and lianowon. the inner end of said collar F thus mounted to normally hole-i 'dagainst the hub of clutch Le is mounted in a grove lof perforationcontainii' Work-Par; u: ood A and eullo (-1 eng es a notch in ihe flan er hold it from turning. no

"lfii? Willa no 32,- is moun; on a pivot. 31 i the loo veen ugs 32 onthe SIQ'Q. of the carria o on the tracks 5 and and is normally held bymeans of spring 33 into, engagement with the screw-threaded portion ofshaft 20 so that the turning of shaft 20 will operate to slide saidcarriage A'stationary concave-faced lug 3-l mates with the hinged nut 30to surround said shaft 20, but isnot formed screw-threaded. A trip bar35 pivoted at one end toga. link 36 and at its other end to hell cranklever 37 is mounted on bed A adjacent to the lower end of an arm 38extending from "the lower side of nut 30 below its pivot 31. Link 36 ispivoted at its other end to the bed and lever 37 is pivoted at point 39in line with said pivot of link 36. The opposite angle of lever 8"! isbifurcated and engages with a circumferential groove in a collar 40 onrod 10 for "a purpose to be presently described.

The rear end of rod 10 is formed with threads or rack teeth ll withwhich the teeth of a pivoted dog 42 are adapted to engage. Said dog 42is pivoted on the carriage C (see Fig.7) and is normally held against astop pin 43 by a sprin 44 out of engagement with said teeth, g springshoe 4-5 is mounted on the lower edge sition to throw dog 42 downwardinto engagement with the teeth in said rod 10 ascarriage 0 moves intoposition for the end of said dog to pass under said shoe. I have shownthe teeth in section 421 of shaft 10- in the form of spiral threads,which I regard as of advantage in enabling a fine adjustment to besecured, but rack-bar forms: on one side oi rod 10 only will, 01"course, be

- operative.

l? mounted on the rear end of shaft 16 1S termed, as best shown. in

Turret hollow 8 and 9, with a rim Q5 having a series of radialperforations through which the bolts constituting the wort: are adaptedto extend and having an internal grmive or recess of a size adapted toreceive the heads said bolts to hold them from turning. A. magazine 46mounted by means of a supporting brace 46 to guide the Work from asource of supply (such as any appropriately arranged hopper, not shown,)to within the rim on the turret wheel lf, said work being dropped fromthe end of said magazine into a chute (Fig. 8) which guides them to thebottom of the wheel where they will slide, one by one, through theradial perforations as said turret is rotated step by step to bring saidperforations in line with'said chute. 1

'Gpposite each perforation in rim 4&5 is formed a notch 7 in the side ofturret l7 wi P. which a latch bolt 6? is adapted to on- Said latch bolt(31 is mounted in a trans erse perforation in carriage (I and normallyheld into engagement wi h one 0* said .notcl es by a spring Said bolt isformed with a notch having a tapered face a said corner of to strike endof cam 65, by means of a spring 72. The forward end of said trip extendsbeyond the cam strikes to a point near theadjacent corner of carriage Cformed tapered and adapted to contact with a tapered face 0 on shoulderagainst which end of carriage O immediately after i said cam 65 has beenoperated to disengage I- locking bolt 67 from turret 17. ;Pivoted strike66 is thus thrown away from cam 65 and spring 68 permittedto throw bolt67 into the next notchfnas soon as turret 17 ad ances to a point tobring said notch to register therewith. By adjusting screw 70 theoperation oi the parts may be timed and regulated to a very fine degree.

Mounted within hollow shaft 16 is a solid shaft having a flanged cap 51on its outer end, which surrounds the end of boss 0' on the carriage C,to which it is secured by a set-screw 52. Said cap is secured to the endof shaft 50 by a pin 53, thus holding said shaft stationary: A hub k isrigidly secured on the opposite end ports an arm 54 having a segmentalshoe 55 on its outer end on the face of which is mounted a spring guide56 in close proximity to the inner face of the min-(t5. Said springguide be adjusted in its relation to said rim 45 by means of set-screw57.

A chute 58 is also mounted on the outer end of said hub the upper end ofwhich is in position to receive the work from the top of rim 4-5 ofturret l7 and the lower end'of which is arranged to discharge thefinished work into a receptacle 59 located in the bed of the machine Theoperation of the machine is as follows: The parts boil 1;; adjusted asshown in Fig. l, the bolt blanks come to the revolving turret 1'? fromthe magazine and slide down chute 48, one by one, the pointsof theblanks passing through the perforations in said rim as indicated. Themain shaft 1 is driven from pulleys 2, the motion of which istranszoittml through a gear 3 on said shaft 1 to an intermediategearwland from thence to a gear 60 on the carriage driving revolved, thenot part of said shaft, riae'e adjusted to food said carriage at a shaft20. As; said carriage driving shaft is w th the screwthreaded IS slidf'll'lYZli'tl on its tracks to corresponding: to the pitch of theadiusted to regulate the length ofthread to I 30 being in engagement ary the lm t to the. die B the driving gear iread being out. Nut 15 on rod10 is also same time, through the be out on the Work. When arm a oncarriage C strikes said out 1-3, rod ll) is forced forward hiclu throughthe lever 12 and connections with the cutter-head, operates themechanism to open the die and, at the bell crank lever 37, operates tothrow the trip bar inwardly against the lower end 38 of the arm'onpivoted nut 30, throwing said nut out of engagement with shaft 26.Immediately upon said nut being released from shaft 20 Weight 61operates through flexible connection 62, which runs over idler pulleys63 and 64: to a connection with carriage C. to slide said carriagerearwardly on the bars 5 and 6 until the outer end of dog %2 comes underspring shoe 45 on yoke C which throws said dog downwardly intoengagement with i the rack section of rod 1G and {forces said rodrearward y, operating through the connection with the cutter-head toclose the die and at the same time retract trip bar 35, permittingspring to again reengage nut 30 with the readed portion of the carriageoperating;- shaft 20 and repeat the forward movement of the carriagecarrying the-work. As carriage C reaches the limit of its rearwardmotion th outer end of the sliding cam 65 strikes the shoulder of thepivoted trip forcing said caminwardly, its tapered face operating uponthe tapered face of the notch. in latch bolt 8'? to withdraw said latchbolt f om engagement with the notch 2 in turret l7, freeing said turretfrom its lock. The continuation of the mo einent of carriage Cimmediately breaks the connection between parts 65 and 66 and permitsspring 58 to reengage bolt 67 to look turret 17 at the next notch n, asbefore described. W is unlocked As soon as turret ii the outer end ofthe hub of clutch part 22 contacts with the face of spring mountedsleeve 2; in yolre C. forcing the two clutch :arts together andoperating Worm 19 to turn hollow shaft it; and, through it, heel 17until the next notch n opposite the next radial perit'oration in turret17 is reached, when spring 68 operates to throw bolt 67 to cog-d e withsaid notch and lock said Wheel in posiiion to recei e the nest blank atits lower-1 hole and )rmgthe blank carried I in 115,. mrforationopposite the die in posil tioa said Kl!" to operate upon. As the} cc ithe heads the bolts pass r spring shoe hichscrvcs heads of said blanksfirmly to the groove in the run 45, the

i hus held from turning during prove i i cut Bolt 57 poort for thethrust oi work at inning or" i cutting? and the shoe posi ion until itreaches th 2 top tl n the app n i illlfllSllQS a i l l turret Where lopening and closing the receptacle 59 in the bed of the machine Byadjusting yoke C and the parts carried thereby any length of boltdesired may be operated upon and the travel of the carriagecorrespondingly regulated. By adjusting the nut 15 on rod 10 the lengthof the out or thread on the work may be regulated as desired.

Having thus fully described my said invention, What I claim as new anddesire to secure by Letters Patent, is:

n automatic bolt threading machine comprising-a bed, a cutter-head, areciprocating work carriage, means for feeding the work, screwsh'aft foroperating said reciprocating carriage, a pivoted part carrymg a nut'portiou adapted to be normally held into engagement With saidscrew-shaft, a trip bar for throwing said nut section out of engagementwith said screw-shaft, a sliding rod connected with the mechanism forthe die, a connection between said sliding rod and said trip bar,whereby saidtrip bar is operated as the die is opened to release saidnut part from said soreW-shaft,and means for sliding said Work carriageaway from thecutter-head as soon as said die is opened and the nutpartre leased, substantially as set forth.

automatic bolt threading machine comprising a bed, cutter-head embodyingadie, means for operating the same, a Work carriage, means for feedingthe Work, a gear for feedingsaid work carriage to the cutterhead, meansfor opening the die and releasing said gear when thecutting operation iscompleted, a transverse shaft, a turret mounted thereon, a clutchconnection be tween the carriage feeding gear and the shaft of theturret Wheel, means for engaging said clutch to move said turret wheelforward one step at the limit of the rear- Ward motion of the carriage,for on looking said turret just prior to the engage ment of said clutch,and means for operat ing the die closing mechanism zit-the limit of therearward movement of said WOIli' cs1-- riage, substantially as setforth.

3. An amomatic bolt cutting machine comprising a bed, a cutter-heathmeans for operating the same, a reciprocating Workcarriage, a carriageoperating screwshaft, a pivoted nut part carried by said woriooar riagefor engaging -with said screivshaft for operating it in a forwarddirection; means for disengaging said not part at the completion of theWork means for sliding said work carriage rearwardly on its track T issaid not part is disengaged, a connection with the die opening andclosing mocha arranged to be operated by said ork-car riae e. a contactbetween said work-carriage and said connection *3 the limit of the rearvLarge-so,

with the screw-shaft, and means for feeding the work, substantially asset forth.

' .4. An automatic bolt cutting machine comprising a bed, a cutter-heud,mechanism for opening and closing said cutter-head, a

rod connected with said mechanism for operating the same, areciprocating Work earria ge mounted on tracks on sand bed, connectionsbetween said carriage and said rod (for sliding the same to operate theopening and closing mechanism, a gear foiberating said carriage in aforward direction, means operated by said, rod for disenga'ging'saidg'ear'at the opening of the die, means for returning said carriage tocontact With an dj-ustab e yoke mounted on its track,- said yoke, meansfor adjusting said yoke to regulate the length of movement of saidcarriage, means carried by said yoke for engaging. the carriage withsaid rod, a; turret on said carriage :tor receiv ng presentingthe workto the die, a gear conneetionbe tiveen said carriage operating gear-endthe shaft of said turret, and means for throwing said gear into:engagement at the limit "T-"the rearward movement of said carriage,substantially as .set forth. 1

An automatic bolt threading machine comprising a bed, a cutter-head, arecipro eating worlrz-carriage, an adjustable yoke mounted on the tracksof said carriage, a connection for opening andclosing the head, andadjustable strikes between said connection and said Work-carriagewhereby said connection is o erated, one of which is carried by said ajustable yoke, substantially as set forth Q 6. An automatic boltthreading machine comprising a bed, a cutter-head, a reciproeatingwork-carriage, a connection between said reciprocating work-carriage andsaid cutter-head for opening and closing the die, a dog carried by saidcarriage for engaging rack-teeth formed on said connection, and anadjustable strike for throwing said dog into engagement with saidraek-teeth at a predetermined point, substantially as set forth.

7. An automatic bolt threading machine comprising a bed, a cutter-heed,a reeiproeating Work-carriage, means fol-reciprocating saidwork-carriage, a connection between said Work-carriage and saidcutter-head for opening and closing the die, a rotary turret on saidWork-carriage for receiving and holding the Work to the cutter-heed,means for operating said turret step-by-step to pre sent the bolt blanksto said cutter-head successively, menus for locking said turret at thecompletion of each step of it movement, and means for rigidly supportingsaid bolt blanks in said turret while being operated upon substuntiallas set forth.

8. An automatic bolt threading machine comprising a. bed, atcutter-head, a reciproe iii iise erated intermittingly, f

eating Work-earrings, a screw-shat; for operatingsaid,Work'-'carriage,'a sleeve on said serewshaft carrying al worm gear,a clutch mechanism for, coking said sleevefto said screw-shaft ate,predetermined point, a rotary turret 'journaled in shearing-0n saidreciprocating carriage, a gear on the journal of saidturret engagingwith the worm-gear on'said sleeye, means for lockinggs'aid turret atpredetei'njined points, endiiieailsfor feeding the "work blanksto'said'tu ret, substantially .zi-s .set'iorth, An-l tomati'boltthreadingmachine f, 'cutte heed, a 'reciproeating viork-ca iatgeauscrew-shaft for opamong-lend WQIkj Ef-EIQgQ a,- work carrying turretonsaidfearria'ge,a gear for op-- erating :sai d urre' ntermittingly, and,

clutch inechan shi for engaging said gear with solid! tervals, sub:

w-shaf -at.'predetermined in- {stifi y ass t e -1:1 lmuehi'ne c mp is ng1,: :ca'tin'g .-;WQik ear'ria s'ai'd cutter? opening I h I rotary turretjournaled on i'sard. orkeaf i'age for receiving and fpreseritingt e weekto said outter-head,nieans 0 dingthe yvork to said rotary turren.erevy-s'hef t for operating said receiving work-carriagej end e gear em;bodyiug a clutch connecting th'e turret with said screw-shaftWherebyisaid turret isopubstantially' as set forth.

11. An automatic bolt threading machine comprising a bed, a cutter-head,a reciprocating Work-carriage, a, Work carriage operating shaft, arotary turret on said work carriage, and clutch mechanism connectingsaid rotary turret with said operating shaft,

whereby said turret may be operated intermittingly, substantially as setforth.

12. An automatic bolt threading maclpine comprising a bed, acutter-head,- a reciproeating Work-carriage, a screw-shaft for operatingsaid Work-carriage, a rotary workearrying turret on said Work-carriage,a gear carried by said Work-carriage and corn nected to operate saidturret, anda, clutch 1 15 for securing said gear to turn with saidscrew-shaft at intervals, substan a1 as-set forth. 1.

13. An automatic bolt threading madhine comprising a bed, aeutter-head,aa reciproeating; Work-carriage, e screw-shaft operet- .ingsaid work-carriage, 'ai-Work-carrying turret journaled in said Workcerr'iage'an adjustable yoke arranged at the limit of the rearwardmovement of said Work-carriage, a gear connection between the journal ofsaid turret and said screw-shaft embodying a clutch, and a yieldingcollar mounted on said yokelin position to turn iha'shid-"clfiteh at thelimit ofthe rearwardmovernent of mentof the carriage, substantially assetforth.

15. An automatic bolt threading machine comprising a bed, a cutter-head,a reciproeating work-carriage, means foroperating 1 said work-carriage,a work-carrying rotary turret journaled on said work-carriage, a lockfor securing said turret in e ch position, a sliding cam engaging withthe bolt of said lock for disengaging thesame, a pivoted strike mountedon .a frame adjacent to said carriage and in position to operate saidcam at the limit of the rearward movement of said carriage, and meansfor throwing said strike out of engagement with said cam afterwithdrawing said bolt and unlocking the turret, substantiallyas setforth.

16. An automatic bolt threading machine comprising a bed, a cutter-head,a reciproeating work-carriage, means for operating said carriage, arevolving work-carrying turret journaled on said work-carriage, meansfor operating said turret, a magazine for feedingthe work to saidturret, said turret being formed with radial holes and an interiorgroove adapted to receive and hold the bolt heads, and a spring shoeadjacent to said groove for forcing said boltheads to their seatstherein, substantially as set forth.

17 A11 automatic bolt threading machine riage, means for operating saidwork-carriage," a rotary work-carrying turret journaled on saidwork-carriage, meansfor operating said turret, a magazine for feedingthe-work to said turret, said turret being formed with a recess in theinterior of its rim adapted to receive and hold the bolt heads, a shoewith a segmental face supported on an arm from a hub mounted around theaxis of said turret, and a spring guide mounted on said shoe forforcingsaid bolt heads to their seats and holding them between thereceiving and the discharge points, substantially as set forth.

18 An automatic bolt threading machine comn'risin a bed acutter-head awork- 7 7 carriage, means for operating said workcarriage, a rotarywork-carryin turret journaled on said work-carriage, means for operatingsaid turret step-by-step, means for securing said turret at each step inits move-- ment, a magazine for feeding the work to said turret, aguide-chute for guiding said work to seats in the rim of said turret,said I rim being formed with radial perforations and an internal recessadapted to receive and hold the bolt head, a shoe supported on an armfrom a hub mounted around the axis of said turret, a spring guidemounted on the face of said shoe in position to force the work to itsseat and hold the same between the receiving and the discharge point,and an adjusting screw for adjusting said spring guide, substantially asset forth.

In witness whereof, I have hereunto set my hand and seal at Washington,District of Columbia, this 22nd day of March, A. D. nineteen hundred andeleven.

E. 3V. BRADFORD, J. D. YOAKLEY.

